Used By Over 200+ Clincs In the U.S
GHK-CU Copper Peptide Serum
GHK-CU Copper Peptide Serum
See smoother, firmer, clearer skin starting in days — with long-term repair that fades scars, refines texture, and restores your natural glow.
Instant "Glass Skin"
99% Pure GHK-Cu
Needle-Free Infusion
Revitalize Your Skin Barrier
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GHK-CU Copper Peptide Serum
"I recommend Mastara to all my patients because it signals to actually thicken the dermis on the skin rather than strip it. It’s exactly what’s worked for my patients to restore structural density without the irritation of harsh acids."
What Results Can I Expect?
What Results Can I Expect?
Results may vary, but 99.5% of customers say they’re satisfied with the transformation they see on their skin. In fact, 93% call them the best skin treatment they’ve ever tried.
What people often notice first isn’t just brightness—it’s less puffiness, smoother skin, and a refreshed, well-rested look. Some even report seeing visible changes in as little as 7 days.
How Does It Work?
How Does It Work?
This concentrated copper peptide serum supports your skin’s natural repair process to fade acne scars, smooth uneven texture, and restore a firmer, healthier-looking complexion.
The lightweight, fragrance-free formula absorbs quickly, calming redness, strengthening the barrier, and reviving a fresh, radiant glow.
Suitable for all skin types — including sensitive and acne-prone — it delivers both immediate refinement and long-term improvement.
How Do I Use It?
How Do I Use It?
Recommended for use morning or night. Apply a small amount to clean, dry skin and gently massage until absorbed. Follow with your moisturizer or night cream.
If you have sensitive skin, we suggest patch-testing a small amount on the neck before applying to the face.
Ingredients
Ingredients
Water, Pentylene Glycol, Phenylpropanol, Sodium Hyaluronate (1.5%), Copper Tripeptide-1 (0.10%), Sodium Hydroxide - 30 ml
Shipping & Returns
Shipping & Returns
Please allow 1-2 Business Days for us to process and ship your order.
Estimated Arrival Time: 7-10 business days.
We stand behind every product we make. If you’re not completely satisfied with your purchase, you can return it within 30 days in accordance with our return policy — no questions asked.
See It In Action
Your Genes Are Silenced. Let's Turn Them Back On.
GHK-Cu doesn't just sit on the surface; it activates SIRT1, the "Cellular Reset Gene." This biological trigger forces your skin to behave younger, rebuilding lost collagen from the inside out to create a firmer, more structured, and more refined surface.
Our formula was engineered to work with your existing regimen, not against it. Whether you use Retinols, Vitamin C, or Acids, GHK-Cu plays nice—delivering high-potency results without the irritation or clashing found in traditional actives.
Watch your skin reclaim its density. Fade deep lines, firm sagging areas, and bring back the plump, lifted look you had years ago. It’s not just skincare; it’s a return to the most confident, beautiful version of yourself.
Fades Acne Scars & Dark Marks
Formulated with dermatologist-recommended ingredients, Mastara GHK-Cu Peptide Serum supports the skin’s natural repair process while remaining gentle for sensitive and acne-prone skin.
GHK-Cu is one of the most studied peptides in dermatology for improving the look of texture, firmness, and post-acne marks — making it a trusted option for those seeking clearer, smoother, more resilient-looking skin.
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
BETTER SKIN OR YOUR MONEY BACK
Dermatologist Approved
Meet the ingredients behind the glow. Our formula combines nature’s most effective hydrators with the restorative power of GHK-Cu to lift, firm, and revitalize your complexion without the irritation of traditional actives.
Real Customer. Real Results
91%
Said skin looked clearer with softer post-acne marks.
96%
Noticed smoother texture and a more refined surface.
94%
Felt their skin looked firmer and less puffy over time.
Recommended by skincare professionals and trusted by thousands who’ve seen visible improvements.
Trustpilot reviews
Excellent 4.8 / 5
Frequently Asked Questions
How long until I see results?
How long until I see results?
Most customers report visible improvement by Week 2-3.
Dramatic transformation typically visible by Week 4-6.
Everyone's skin is different, so results may vary by starting point.
(Mechanism: SIRT1 activation timeline + gene reactivation speed)
Do I need a dermaroller or dermastamp for it to work?
Do I need a dermaroller or dermastamp for it to work?
No. GHK-Cu peptides work topically on their own. Some users prefer using a derma roller for enhanced absorption, but it’s completely optional.
Is it safe for sensitive skin?
Is it safe for sensitive skin?
Yes. GHK-Cu is bio-identical (your body recognizes it as self),
so it doesn't trigger reactivity. It's specifically designed for
damaged/sensitive skin barriers.
(Mechanism: Bio-identical formula + barrier repair benefits)
Can I use it with other products?
Can I use it with other products?
Absolutely. GHK-Cu works through SIRT1 activation (gene reactivation),
which works alongside other actives. Many customers use it with moisturizers,
serums, sunscreen. No known interactions.
(Note: May reduce need for other products over time as skin regenerates)
What if it doesn't work for me?
What if it doesn't work for me?
We offer a 30-day money-back guarantee. If you don't see results,
full refund, no questions asked. That's how confident we are in the mechanism.
85% of customers see dramatic change.
Is the science real?
Is the science real?
Yes. GHK-Cu's SIRT1 activation mechanism is backed by peer-reviewed research:
- Frontiers in Pharmacology (July 2025) - Mechanism validation
- MDPI Molecules (Jan 2025) - Bioavailability studies
All citations available on request.
Is this better than Retinol for anti-aging?
Is this better than Retinol for anti-aging?
It’s the opposite. Retinol exfoliates(strips) the skin; GHK-Cu signals the skin to rebuild. It triggers your body to thicken the dermis and restore structural density without the redness or peeling. It’s not just surfacing; it’s remodeling.